Aeromodeller plans of Gyrolec is is a RTP autogyro model of 11 1/2" span for electric motor, the Topaz is a vintage style cabin model of 24" wingspan for rubber motor and free flight & Sopwith 1 1/2 Strutter is a profile scale model of  15" wingspan for rubber motor and free flight This is a double sided plan in new condition, magazine is in good condition with minimal wear. See photograph for detail